chore: make sure no mismatch between timestemps and time series values

src/libecalc/common/utils/rates.py

@@ -156,6 +156,23 @@ def convert_none_to_nan(cls, v: float, field: ModelField) -> TimeSeriesValue:
             return math.nan
         return v
 
+    @validator("values", pre=True)
+    def timesteps_values_one_to_one(cls, v: list, values, field: ModelField):
+        nr_timesteps = len(values["timesteps"])
+        nr_values = len(v)
+
+        if not cls.__name__ == TimeSeriesVolumes.__name__:
+            if nr_timesteps != nr_values:
+                if all(math.isnan(i) for i in v):
+                    # TODO: This should probably be solved another place. Temporary solution to make things run
+                    return [math.nan] * len(values["timesteps"])
+                else:
+                    raise ProgrammingError(
+                        "Time series: number of timesteps do not match number "
+                        "of values. Most likely a bug, report to eCalc Dev Team."
+                    )
+        return v
+
     def __len__(self) -> int:
         return len(self.values)